This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

The smallest post office in the United States is no bigger than a broom closet.

Must form and function forever remain at odds? Not if the Florida Department of Transportation has its way.

A tribute to Ponce de Leon's supposed quest for eternal youth.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Bronze footprints mark the path where a civil rights leader tried to march in peaceful protest before being knocked unconscious.

Electrical pylon in the shape of Disney's beloved mouse.

An abandoned water sports stadium that has become a haven for graffiti and decay.

The site of Martin Luther King Jr.'s arrest as he attempted to have lunch.

St. Augustine's record-setting narrow street was designed to protect against pirates.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

Intertwined, interspecies trees which locals believe can grant boons to lovers.

The museum chronicling a treasure hunter's dream, fulfilled.

Florida's oldest bar was once a morgue, complete with a hanging tree and gravestones.

The highway's southernmost spot is a beloved local attraction.

The island residents are known for taking their quirky sense of humor with them to the grave.

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

An underwater statue of Christ blesses the depths off Key Largo.

One-time winter retreats of prolific inventor Thomas Edison and his friend Henry Ford.